Hand-stamp



(No Model).

B. B. HILL HAND STAMP. i

Patented Apr. 7, 1885.

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BENJAMIN B. HILL, OF PHILADELPHIA, PENNSYLVANIA.

HAND-STAMP.

SPECIFICATION forming part of Letters Patent No. 315,286, dated April 7,1885.

.Application liled December 15, 1883. (No model.)

.To all whom t may concern:

Be it known that LBENJAMIN B. HILL, a citizen of the United States ofAmerica, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and usefulImprovementsv struction, arrangement, and combinations of parts by whichthe reversal ofthe plate is accomplished, as hereinafter moreparticularly 2o described and claimed.

In the accompanying drawings, Figure 1 represents a front elevation of astamp constructed according to my improvement when givingtheimpressi'on; Fig. 2, avertical crosssection of the same on the linea: :v on Fig. 1. Fig. 3 represents a similar sectionA with the handleremoved and the die-plate about to take ink; and Fig. 4 represents asection similar to the last with the die-plate in the act of 3c turning.l i

A represents the Inain frame, constructed in the usual manner, and B isthe handle provided with the usual fork, C,whose lower ends embrace thejournal D, which passes through the slots a a in t-he sides of theframe, and

through ears c e on the die-plate E.

At F is shown a cam-plate arranged across the center of the die-plate;but it may be on one end, if preferred, or half on one end and 4o halfon the other;` but I prefer the central position, as the die-plate isnot onlymore evenly balanced, bilt the cam-plate forms ameans ofstrengthening the dieplate, so that the latter may be made very thin.The cam-plate is made, as shown, with two guides or slots, ff', thesides of which engage with a fixed reverser consisting of two pins, G,passing in this instance from side to side; but when the camplate isarranged at the end of the dieplate 5o it is obvious that pinsprojecting from the side of the frame will be sufcient.

When not in operation, the die-plate is in the position shown in Fig. 3,with the upper pin G in the slot f but as the handle is 5 5 pressed downthe die-plate descends so that said upper pin G passes farther into theslot,-

cause the lower pin G to engage with the slot f, as shown in Fig. 4; andas the die-plate f continues to descend the slot f leaves the upper pinG and the die-'plate assumes the position shown in. Fig; 2 and isreadyto give the impression.

From the above it will be seen that one or the other of the pins G G isalways engaged with the slotted guides in the cam-plate, by

which means all lbacklash is avoided andthe dieplate is held perfectlysteady in all positions.

The use of two slotted guides in one, as shown in my patent abovereferred to, has the advantage of `giving more wearingl surface, andthus the guides and pins last place of y longer and the stamp can beused for a Inuch longer period without repairing.

The arrangement of thecam-plate across the center of the dielplatehasthe advantage over those wherein the guide is at the end thereof inequalizing the friction at both ends;

SQ i

besides which the cam-plate formsa strengthening-rib across the centerof the die-plate, so

that it may be made much lighter and still have sufficient strength.When the two pins G extend from side to side, as shown, there is no usefor the brace or connection between the lower part of the legs on theright-hand side of the slot, because.-

the pins G form a good brace, and thus the space between the sides orlegs on that side of the stamp is left perfectly clear near the paper,and,-if preferred, the brace H (shown on the other side) may be'dispensed with also;

but in this case the metal at the bottom ofthe slot should be slightlyheavier.

What I claim as new is- The combination, with the die-plate of aself-inking stamp, of two guides cnnectedV with said die-plate, and twopins connected with the frame, one pin guiding the die-plate toward theink-pad and the other holding it4 while the impression is being given,substantially as described.

In testimony whereof I affix my signature, in presence of two witnesses,this 14th' day of December, 1883.

Witnesses: BENJAMIN B. HILL.

CHAs. W. MILLER, WILLIAM S. TOLAND.

IOO

